Three-dimensional analysis of condylar remodeling and skeletal relapse following LeFort-I osteotomy: A one-year follow-up bicenter study. Issue 1 (January 2022)

• Record Type: Journal Article
• Authors: van Luijn, Rik; Baan, Frank; Shaheen, Eman; Bergé, Stefaan; Politis, Constantinus; Maal, Thomas; Xi, Tong
• Is Part Of: Journal of cranio-maxillofacial surgery. Volume 50:Issue 1(2022)
• Page Start: 40
• Page End: 45
• Publication Date: 2022-01
• Subjects: 3D imaging -- CBCT -- Condylar remodeling -- Condylar volume -- Le Fort I osteotomy -- Skeletal relapse; Skull -- Surgery -- Periodicals; Maxilla -- Surgery -- Periodicals; Face -- Surgery -- Periodicals; Surgery, Plastic -- Periodicals; Maxilla -- surgery -- Periodicals; Face -- surgery -- Periodicals; Skull -- surgery -- Periodicals; Oral Surgical Procedures -- Periodicals; Reconstructive Surgical Procedures -- Periodicals; Surgery, Plastic -- Periodicals; Surgery, Oral -- Periodicals; Electronic journals; 617.514
• DOI: 10.1016/j.jcms.2021.09.021
• Languages: English
• ISSNs: 1010-5182

Abstract

Abstract: The aim of the study was to quantify the postoperative condylar remodeling after Le Fort I surgery. Patients treated with a Le Fort I osteotomy were investigated. CBCT scans were acquired preoperatively, one week and one year postoperatively. A preoperative 3D cephalometric analysis was performed on the preoperative CBCT. Surgical movements were quantified using a voxel-registration based method (OrthoGnaticAnalyser). After rendering of the condyles from the CBCT, a volumetric analysis was performed. The correlation between the surgical movement of the maxilla and the postoperative condylar volume changes was determined with analysis of variance. Results: A total of 45 subjects were included in this study. 47 of 90 condyles (52%) showed a mean volume reduction of 93 mm 3 (4.9 volume-%) postoperatively. The maxilla was impacted in 12 patients (2.44 ± 2.49 mm) and extruded in 33 patients (1.78 ± 1.29 mm). The maxillary impaction group showed a volume reduction of 50 ± 122 mm 3 and the extrusion group showed a mean volume gain of 21 ± 139 mm 3 (p = 0.028). Conclusion: Clinicians should be aware of potential condylar remodeling following solitary Le Fort I osteotomies, particularly in female patients with maxillary impaction.